Cutting-machine.



J; KORNAS. CUTTING MACHINE.

APPLICATION FILED JULYZII l9l6.

Patented J an. 21, 1919.

IIIIHHIIIHHIH W 5 1 00 w for UNITED STATES PATENT TTroE.

JOSEPH KORNAS, 0F LINDEN, NEW JERSEY, ASSIGNOR T0 FELDMAN MACHINE WORKS,

INC., A CORPORATION OF NEW YORK.

CUTTING-MACHINE.

Specification of Letters Patent.

Patented Jan. 21, 1919.

Application filed July 21, 1916. Serial No. 110,450.

To all whom it may] concern:

Be it known that I, JOSEPH KORNAS, a citizen of the United States, andresident of Linden, in the county of Union and State of New Jersey, haveinvented certain new and useful Improvements in Cutting-Machines, ofwhich the following is a specification.

My invention relates in general to a cutting machine-of the type inwhich a circular knife operates upon the material to be cut, whichmaterial is fed to the cutting edge of the knife between a pair ofautomatically adjustable material feed and presser rollers. Theinvention specifically relates to the presser roller of such a machineparticularly designed for trimming the edge of felt hats and the like.

In devices of this character it is usual to have one of the rollers,usually the upper, mounted so that it may move away from its coactingroller to accommodate varying thicknesses of material fed to the cuttingdevice between the rollers. These shiftable rollers must of course beconnected to some driving part of the machine, but as heretoforedesigned the flexible driving connections have been such as to jag thematerial during the cutting operation.

. Accordingly, one of the objects of my invention is to provide aconstruction of the class described arranged to accommodate thedifferent thicknesses of material between the rollers, and at the sametime to provide a positive driving engagement for the shiftable roller,designed so that lost motion between the driving mechanism and theshiftable roller is reduced to a minimum during the period the rollersare accommodating themselves to the different thicknesses of materialfed between the rollers.

Another object of the invention is to provide a Simple form of adjustingmeans for varying the resistance of the shiftable roller in its movementaway from its coacting roller, and at the same time to provide a type ofadjustment which will insure the proper setting of the shiftable rollerwith reference to its coacting roller irrespective of the position towhich the shiftable roller has been forced by the material.

Another object of the invention is to provide a construction of theclass described, in which there will be a minimum number of movableparts, and in this way insure the designing of a simple form of machinewith the least possible number of parts liable to be subjected to wear.

Various other objects and advantages of the invention will be in partobvious from an inspection of the accompanying drawings and in part willbe more fully set forth in the following particular description of oneform of mechanism embodying my invention, and the invention alsoconsists in certain new and novel features of construction andcombination of parts hereinafter set forth and claimed.

In the accompanying drawings:

Figure 1 is a side elevation of a preferred embodiment of my inventionwith parts broken away to save space and to disclose internalconstruction;

Fig. 2 is in general a view in side elevation of the roller mechanismand coacting parts, taken in section on the line 2--2 of Fig. 1.

In the following description and in the claims, parts will be identifiedby specific names for convenience of expression, but they are intendedto be as generic in their application to similar parts as the art willpermit.

The cutting machine illustrated is of the general character ofsuchmachines used in trimming hats and the like, and includes a bed 3,at one side of which is positioned a standard 4:, carrying the arch arm5, the forward end of which terminates in a'depending head 6. Ahorizontally disposed driving and fly-wheel shaft 7 is journaled in thestandard 4 and in the head 6 just below the arm 5'and is connected tosome suitable driving mechanism by means of the pulley wheel 8. A cuttercarrying shaft 9 is loosely mounted in the head 6, adjacent its lowerend, and projects inwardly therefrom. Demountably positioned upon theprojecting portion of this shaft is a conventional form of circularcutter 10 held in place by the lock nut 11. The outer face of the cutterbears against the adjacent side of a feed wheel 12, mounted upon a feedwheel shaft 13. This feed wheel shaft parallels the shaft 7, and isdriven therefrom through a gear train 14; carried by the standard 4. Thecutter shaft 9 is likewise geared to the main shaft 7 so as to be driventhereby, and as herein disclosed, the connection is provided by a geartrain 14' contained 1within the head 6. The

gear train consists of four spur-gears meshing in order vertically, andmounted upon shafts 15 extending transversely through the head. Apresser wheel or roller 16 is mount ed to bear upon the periphery of thefeed wheel 12, so as to constitute a pair of rollers to accommodate thematerial thereb'etween as it is fed to the cutter. The presser roller ispositioned loose on theshaft 9 and for thispurpose is provided. with acentral opening 17 having a diameter greater than the diameter of theshaft 9, so as to permit a shifting movement of the presser roller whenin position on the shaft, as shown more particularly in Fig. 2. i

A positive driving connection 1s provlded between one of the shafts 15,such for instance, as the shaft 18 carrying the gear meshing with thelast or cutter shaft gear 19, and for this purpose the shaft 18 has aspur-gear 2O fixed thereto and constantly meshing ,with a similar gear21 integral With or otherwise fixed to one side of the presser wheel 16.The meshed gearing 20 and 21 contain relatively long teeth 22, as shownmore particularly inl ig. 2. This form of tooth to the gears tends tomaintain a positive and constant driving connection between the shaft 18and the presser wheel while permitting a vertical shifting movement ofthis presser wheel.

The presser wheel is maintained in resilient engagement-With the feedwheel, or with the material carried between the wheels, by means of apair of spaced apart bearing rollers 23 engaging the upper side of theperiphery of the presser wheel on opposite sides of a vertical linepassing through the axisof the cuttershaft 9. The'rollers 2 3 arecarried in a bracket 2-1, slidably mounted upon a rod 25, constituting afixed part of the frame. and paralleling. the length of the head 6. Aspring 26 has one end. bearing upon the bracket 2a in order to force therollers into resilient engagement with the presser wheel, and the otherend of this spring bears upon an adjustable nut 27 threaded on the rod25.

In operation, it is to be understood that with the machine in activeoperation, the material is fed between the feed wheel and presserroller, iwhich action forces the ipresser roller upwardly away from thefeed wheel are in their normal spaced apart position. It is understoodthat the spring 26 acts through bearing rollers23 to act on'the materialwith a tension depending upon the present position of the spring, andthat the spaced apart position of the rollers has the eflectof'ste'adying the presser -wheel,'mini- "mizing any tendency towardarocking m0- The constantly meshed position of the gears 22 eliminatesany loose connection at this point, and the constantly acting movementof the presser wheel on the material is insured so that there iseliminated the hereto- I fore objectionable ag in the cutting lineusually caused by the delayed meshing or back latching of interengagingparts.

While I have shown and described, and have pointed out in the annexedclaims, certain novel features of my invention, it will beunderstoodthat various omissions, substitutions and changes in the form anddetails of the device illustratedand in its 0peration may be made bythose skilled inthe art without departing from the spiritof theinvention.

Having described my invention, I'claim: 1. In a cutting machine, thecombination with a cutter, of a feed wheel engaging the side of thecutter and coacting therewith to form a shearin mechanism, a gear trainvfor driving the fee wheel, a presser wheel bearing on the feed wheel,means fordriving the cutter, said means including a gear train, andmeansfor positively driving thepresser wheel, said last named means includingia gear train operatively connected with the firstnamed gear train tobedriven thereby.

.2. In a cutting machine, the combination.

with a cutter, mechanism for rotating the cutter, and a feed wheeldisposeda'djacent the cutter, of. a presser wheel engaging the feedwheel, and means for positively driving the presser wheel from thecutter rotating mechanism, said means including loosely meshed gearingdesigned to permit a movement of the presser wheel relatively to thefeed wheel while maintaining: the positive driving connection with thecutter rotating mechanism. i

3. In a cutting machine,-axsupport, a "cutter shaft journaled in saidsupport for movement about a fixed axis of rotation, a'cutter fixed tosaid shaft to rotate therewith, means for driving said shaft, a presserwheel loose on said shaft, a gear fixed'to said presser wheel torotatethe same, and a driving gear meshing with said presser wheel gearin all positions of the presser wheel and opera tively connected withsaid shaft driving means. i

4. In a'cutting machine, the combination of a feed wheel, a cuttershaft,acutter'fixed to .the shaft and 'operatively mountedadjacent the feedwheel, a presser wheelloose on the cutter shaft and bearing on the .feedwheel, -'a drivingshaft, a contmuous drivin connection between 'the'driving shaft an the cutter shaft, and alloose drivingconnectionbetween the driving shaft and the presser wheel, said loose connectionpermitting a relative movement between the presser wheel and feed wheelwhile maintaining a continuous driving connection with the presserwheel.

5. In a cutting machine, the combination of a feed wheel, a cuttershaft, a cutter fixed t0 the shaft and operatively mounted adjacent thefeed wheel, a presser wheel loose on the cutter shaft and bearing on thefeed wheel, a driving shaft, acontinuous drivin connection between thedriving shaft an the cutter shaft, a loose drivmg connection between thedriving shaft and the presser wheel, said loose connection permittin arelative movement between the presser w ieel and feed wheel Whilemaintaining a continuous driving connection with the presser Wheel, andmeans acting on the presser wheel tending to move the same into pressingengagement with the feed wheel.

6. In a cutting machine, the combination with a cutter, and a feed wheeloperatively associated therewith toform a cutting mechanism, of apresser wheel designed to press the goods to the feed wheel and mountedfor movement relative to the cutter, and means for driving the cutter,said means being constantly in driving engagement with the feed wheel.

7. In a cutting machine, the combination of a feed wheel, a shiftablepresser wheel bearing on the periphery of said feed wheel, aspring-pressed bracket disposed above the presser Wheel, and spacedapart bearing rollers carried by the bracket and engaging the presserwheel on opposite sides of a vertical line passing through the axis ofrotation of the presser wheel, said bracket acting through the bearingrollers to steady the same while engaging the material to be cut.

8. In a cuttin machine, the combination of a feed whee, a shiftablepresser wheel bearin on the periphery of said feed Wheel, a brac ctprovided with means for engaging the periphery of said presser Wheel,and a spring acting on said bracket for pressing the same intoengagement with the presser wheel.

Signed at New York city in the county of New York and State of New Yorkthis twelfth day of July, A. D. 1916.

JOSEPH KORNAS.

Copies of this patent may be obtained for five cents each, by addressingthe "Commissioner of Patents,

Washington, D. O.

